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ILPS22QSTR 数据表(PDF) 31 Page - STMicroelectronics

部件名 ILPS22QSTR
功能描述  Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor
PDF  57 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ILPS22QSTR 数据表(HTML) 31 Page - STMicroelectronics

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Command
Command code
Default
Description
GETPID
0x8D
0x08
0x00
0xB4
0x90
0x0B
0x02
0x08
0x00
0xB4
0x10
0x0B
SDO = 0
GETBCR
0x8E
0x07
(1 byte)
Bus characteristics register
GETDCR
0x8F
0x62 default MIPI I3CSM device characteristics register
GETSTATUS
0x90
0x00
0x00
(2 byte)
Status register
GETMXDS
0x94
0x08
0x60
Return maximum write and read speed
GETCAPS
0x95
0x00
0x11
0x18
0x00
Provide information about device capabilities and supported extended features
SETGRPA
0x9B
Group address assignment command
RSTGRPA
0x2C/0x9C
Reset the group address
RSTACT
0x9A/0x2A
Configure slave reset action
7.5
Overview of anti-spike filter management
The device acts as a standard I²C target as long as it has an I²C static address. The device is capable of
detecting and disabling the I²C anti-spike filter after detecting the broadcast address (7'h7E/W). In order to
guarantee proper behavior of the device, the I3C master must emit the first START, 7'h7E/W at open-drain speed
using I²C fast mode plus reference timing.
After detecting the broadcast address, the device can receive the I3C dynamic address following the I3C push-
pull timing. If the device is not assigned a dynamic address, then the device continues to operate as an I²C device
with no anti-spike filter. For the case in which the host decides to keep the device as I²C with anti-spike filter, there
is a configuration required to keep the anti-spike filter active. This configuration is done by writing the ASF_ON
bit to 1 in the I3C_IF_CTRL (19h) register. This configuration forces the anti-spike filter to always be turned on
instead of being managed by the communication on the bus.
ILPS22QS
Overview of anti-spike filter management
DS13431 - Rev 3
page 31/57



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